[Bubby Sharp in KY]

Has anyone done a comparison of the 5.5 to 1 and the 6.1 to 1 Snyder's high compression heads . I have installed three 5.5 's for other people and they ran strong. They all had reground touring cams and .060 or less over bore otherwise stock newly rebuilt . I installed a 6.1 in my car , newly rebuilt engine which has the following modifications , .100 overbore , new stipe 330 cam, B carb. , bored out intake , oversize SS valves . My car runs strong but not really any stronger than the cars with the 5.5 . My question , is the 6.1 really any better than a 5.5 or mayby not as good a choise ? Looking at the compression chamber the 6.1 looks more like the stock head , while the 5.5 has a heart shaped chamber . Any experiance or opinions ? Bubby Sharp in KY